The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 14, 2010
Filed:
Sep. 05, 2007
Tetsuya Toshine, Numazu, JP;
Chiaki Tanaka, Izunokuni, JP;
Michio Kimura, Numazu, JP;
Tomoyuki Shimada, Shizuoka, JP;
Nozomu Tamoto, Numazu, JP;
Yoshiki Yanagawa, Numazu, JP;
Hiromi Tada, Numazu, JP;
Tetsuya Toshine, Numazu, JP;
Chiaki Tanaka, Izunokuni, JP;
Michio Kimura, Numazu, JP;
Tomoyuki Shimada, Shizuoka, JP;
Nozomu Tamoto, Numazu, JP;
Yoshiki Yanagawa, Numazu, JP;
Hiromi Tada, Numazu, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
The present invention provides an electrophotographic photoconductor capable of reducing latent electrostatic image stability defects caused by adhesion/adsorption of an electric discharge product formed by a charger in an image forming process, degradation of charge transportability and cleaning defects caused when removing a residual toner. The electrophotographic photoconductor has a conductive substrate, and a photosensitive layer which contains at least a binder, a charge generating material and a charge transporting material and is formed on the substrate, wherein the photosensitive layer contains an injection material composed of at least any one of one wax selected from paraffin waxes, Fisher-Tropsh waxes, polyolefin waxes and a polyorganosiloxane compound in an area from the surface of the photosensitive layer to 50% of the thickness thereof in the thickness direction of the electrophotographic photoconductor, and the content of the injection material is 3% by mass or more to the content of the binder.